KEY: Testify.
SYN: depose, swear, declare, witness, protest, affirm, verify, attest, confirm, certify, asseverate.
ANT: Misdeclare, misaffirm, misdepose, mistestify, falsify.
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KEY: Testimonial.
SYN: Credential, recommendation, monument.
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KEY: Testimony.
SYN: Witness, evidence, attestion, affirmation, corroboration, confirmation, proof.
ANT: Refutation, contradiction, disproof, confutation, contravention, invalidation.